Buggy InfiniteScroll position=top on iOS

[stalniy]

Ionic version: (check one with "x")
[ ] 1.x (For Ionic 1.x issues, please use https://github.com/ionic-team/ionic-v1)
[x] 2.x
[x] 3.x

I'm submitting a ... (check one with "x")
[x] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://forum.ionicframework.com/ or http://ionicworldwide.herokuapp.com/

Current behavior:
Currently when you scroll top on iOS, scrollTop position of ion-content is not properly updated, thus infinite scroll is called until everything is loaded and scroll position jumps

Expected behavior:
When a new set of items is loaded scrollTop should be properly updated without jumps

Steps to reproduce:

1. Open components/infinite-scroll/test/position-top on iOS and scroll top

Ionic info: (run ionic info from a terminal/cmd prompt and paste output below):

cli packages:

    @ionic/cli-plugin-cordova       : 1.5.0 (/home/sergii/projects/misto/node_modules/@ionic/cli-plugin-cordova)
    @ionic/cli-plugin-ionic-angular : 1.4.0 (/home/sergii/projects/misto/node_modules/@ionic/cli-plugin-ionic-angular)
    @ionic/cli-utils                : 1.6.0 (/home/sergii/projects/misto/node_modules/@ionic/cli-utils)
    ionic (Ionic CLI)               : 3.6.0 (/home/sergii/projects/misto/node_modules/ionic)

global packages:

    Cordova CLI : 7.0.1 

local packages:

    @ionic/app-scripts : 2.1.3
    Cordova Platforms  : android 6.2.3 ios 4.4.0
    Ionic Framework    : ionic-angular 3.6.0

System:

    Android SDK Tools : 26.0.2
    Node              : v8.1.4
    OS                : Linux 3.19
    npm               : 5.0.3 

[ghost]

I assume you are using WKWebView here? If so, this is a duplicate of #11587.

[stalniy]

@jobvanstiphout correct, thanks!

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.